Dipolar energy of Nd-Fe-B nanocrystalline magnets in magnetization reversal process

被引：4
|
作者：
Ohtori, Hiroyuki [1 ]
Iwano, Kaoru [1 ]
Mitsumata, Chiharu [2 ]
Yano, Masao [3 ]
Kato, Akira [3 ]
Shoji, Tetsuya [3 ]
Manabe, Akira [3 ]
Ono, Kanta [1 ]
机构：
[1] High Energy Accelerator Res Org KEK, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[3] Toyota Motor Co Ltd, Toyota, Aichi 4718571, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 17期
基金：
日本科学技术振兴机构;
关键词：
ND2FE14B SINGLE-CRYSTALS; FORCE MICROSCOPY; DOMAIN-STRUCTURE; PERMANENT-MAGNETS; SINTERED MAGNETS; NDFEB; HYDROGENATION; DESORPTION; DEPENDENCE; FILMS;
D O I：
10.1063/1.4864041
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We analyzed the dipolar energy of Nd-Fe-B nanocrystalline magnets in magnetization reversal process through visualizing magnetic dipolar interaction. We obtained magnetization distribution images experimentally by using scanning transmission X-ray microscopy (STXM). The magnetic dipolar interaction was calculated by the interaction between the magnetization at each point and those at the other points on the STXM image. We showed the dipolar energy in the nanocrystalline Nd-Fe-B magnets and compared it with the exchange energy at various applied fields. Our results indicated the significance of the dipolar energy in magnetization reversal process. (C) 2014 AIP Publishing LLC.
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页数：3
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